1. SOURCES: Chopper crash of Gen Bipin Rawat was the result of Controlled Flight Into Terrain (CFIT) in cloudy weather conditions. (CFIT is defined in aviation as being caused by pilot error.) IATA definition in next tweet:
2. IATA (International Air Transport Association) - CFIT refers to accidents in which there was an in-flight collision with terrain, water, or obstacle, without indication of loss of control. (MORE)
3. IATA: The critical distinction in these types of accidents is the fact that the aircraft is under the control of the flight crew.
4. United States Federal Aviation Administration (FAA) definition of Controlled Flight into Terrain: '' ... an unintentional collision with terrain (the ground, a mountain, a body of water, or an obstacle) while an aircraft is under positive control.''
5. SOURCES: Mi-17V5 chopper was fully operational (not malfunctioning) at the time of the crash.
6. This is how ANI, which is usually briefed first and in detail by the government reported this in a copy last night. 
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